Topic

Trigonometry

Right triangles, sines, cosines, identities and inverse functions.

4 units·1 class covered·4 practice-ready

Why this matters

How tall is that tower? What is the angle of the sun at 4 pm? Trigonometry is the ancient answer to "how big is that thing I can't reach?"

Astronomy, navigation, music theory (yes, sound waves are sines), civil engineering — trigonometry is the bridge between geometry and physics. In Class 10 boards, it reliably delivers 12-14 marks if you know your $\sin, \cos, \tan$ table cold.

The story arc

Class 10Sine, cosine, tangent, identities and heights-and-distances.
Class 11Trigonometric functions of any real number.
Class 12Inverse trigonometric functions and their principal values.

Topic-wise practice paper

Mixed practice — all classes, one paper

15 hand-picked questions spanning every class where this topic appears. Auto-scores with hint ladder + AI Tutor when you're stuck.

Class 10

4 units · 2 tracks

Unit 8

241 · Basic

Introduction to Trigonometry

Trigonometric ratios (sin, cos, tan and reciprocals), values at standard angles, and fundamental identities.

Practice ready

Unit 9

241 · Basic

Some Applications of Trigonometry

Real-life problems on heights and distances using angles of elevation and depression.

Practice ready

Unit 8

041 · Standard

Introduction to Trigonometry

Trigonometric ratios (sin, cos, tan and reciprocals), values at standard angles, and fundamental identities.

Practice ready

Unit 9

041 · Standard

Some Applications of Trigonometry

Real-life problems on heights and distances using angles of elevation and depression.

Practice ready